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Question
Which of the following relations is called Snell's Law?
Options
\[n_1 n_2 = \sin i \sin r\]
\[n_1 \sin r = n_2 \sin i\]
\[n_1 \sin i = n_2 \sin r\]
\[n_1 + n_2 = \sin i + \sin r\]
MCQ
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Solution
Snell's Law is expressed as \[n_1 \sin i = n_2 \sin r\]. It is used to solve numerical problems involving refraction.
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